VS Code extension ripgrep searches from filesystem root, causing 250%+ CPU usage

Bug Description

The Claude Code VS Code extension (anthropic.claude-code) spawns rg (ripgrep) processes that search from the filesystem root (/) instead of the workspace root. These processes consume ~250% CPU each and run indefinitely (45+ minutes observed), effectively performing a full-disk traversal.

Environment

• Extension: anthropic.claude-code v2.1.38 (darwin-arm64)
• VS Code: macOS (Darwin 25.2.0, Apple Silicon)
• Triggered by: Native binary at resources/native-binary/claude

Observed Behavior

Two rg processes are spawned with absolute glob patterns rooted at /:

Process 1 (PID 86363, 252% CPU, 20+ min runtime):

/Applications/Visual Studio Code.app/.../rg --files --hidden --case-sensitive \
  --no-require-git -g /.claude/CLAUDE.md \
  -g !**/.git -g !**/.svn -g !**/.hg -g !**/.DS_Store -g !**/Thumbs.db \
  -g !**/.nova -g !**/.vscode \
  -g !/{**/node_modules,...} \
  --no-ignore --follow --no-config --no-ignore-global

Process 2 (PID 81074, 251% CPU, 47+ min runtime):

/Applications/Visual Studio Code.app/.../rg --files --hidden --case-sensitive \
  --no-require-git -g /.github/agents/*.md \
  -g !**/.git -g !**/.svn -g !**/.hg -g !**/.DS_Store -g !**/Thumbs.db \
  -g !**/.nova -g !**/.vscode \
  --no-ignore --follow --no-config --no-ignore-global

Root Cause

The glob patterns are absolute (/.claude/CLAUDE.md, /.github/agents/*.md), which causes ripgrep to search from the filesystem root /. Combined with --no-ignore and --follow (follow symlinks), this results in:

1. A full traversal of the entire filesystem
2. Potential infinite loops from symlink cycles
3. Sustained ~250% CPU per process with no termination

Expected Behavior

The glob patterns should be relative to the workspace root (e.g., .claude/CLAUDE.md and .github/agents/*.md), and the search should be scoped to the open workspace directory — not the entire filesystem.

Impact

• Two cores pegged at 100% each indefinitely
• Machine becomes sluggish / fans spin up
• Processes must be manually killed (kill <pid>)
• They may respawn on extension reload or VS Code restart